Weight resistant chest exercising device

ABSTRACT

An exercising apparatus having body engaging members that are detachably fixed to offcenter locations on pulleys. The members rotate in opposite directions with respect to each other. Each pulley is connected to a cord that is reeved over another pulley and wherein said cord extends downwardly to attach to weights to be lifted. The apparatus includes a pair of pad members supported for swinging oscillatory movement about parallel axes spaced approximately shoulder width apart. The pad members are swingable between first positions with the pad members disposed on remote sides of their axes of oscillation and second positions displaced approximately 90* from the first positions thereof. The pad members are spaced outwardly of their axes of rotation approximately 5 1/2 inches and are to be engaged by the inner surfaces of the forearm and upper arm spaced slightly from the elbow when the forearm is bent to form an acute angle with the upper arm. With the arms bent, they are to be engaged with the pad members and swung forwardly from oppositely extending opposite side positions forward to positions with the arms extending forwardly. The pad members are yieldingly biased toward the first positions thereof.

United States Patent [151 3,640,527

Proctor Feb. 8, 1972 [54] WEIGHT RESISTANT CHEST Primary Examiner-Richard C. Pinkham EXERCISING DEVICE Assistant Examiner-William R. Browne Attorney-Clarence A. OBrien and Harvey B. Jacobson [72] Inventor: Richard I. Proctor, 7245 -Momingside Drive, Loomis, Calif. 95650 OTHER PUBLICATIONS Physical Fitness Equipment Catalogue no. 69. pg. 6.

[ ABSTRACT An exercising apparatus having body engaging members that are detachably fixed to offcenter locations on pulleys. The members rotate in opposite directions with respect to each other. Each pulley is connected to a cord that is reeved over another pulley and wherein said cord extends downwardly to attach to weights to be lifted. The apparatus includes a pair of pad members supported for swinging oscillatory movement about parallel axes spaced approximately shoulder width apart. The pad members are swingable between first positions with the pad members disposed on remote sides of their axes of oscillation and second positions displaced approximately 90 from the first positions thereof. The pad members are spaced outwardly of their axes of rotation approximately 5 1% inches and are to be engaged by the inner surfaces of the forearm and upper arm spaced slightly from the elbow when the forearm is bent to form an acute angle with the upper arm. With the arms bent, they are to be engaged with the pad members and swung forwardly from oppositely extending opposite side positions forward to positions with the arms extending forwardly. The pad members are yieldingly biased toward the first positions thereof.

Marcy (iym Equipment (10.. Glendale. Calif. 13 Claims 9 Drawing Figures 60 l "-0 O 64 I i 58 l0 Y //3 [6 0 I26 t (3 128 a v; 1/3 7 l s Q i 38 n" 68 34 H l t 170 as 40 ,8 44 i [66 t I68 f I56 I I52 /64 26 l 54 24 i i 140 a I2 26 PAIENIEUFEB a 1912 3.640. 52?

saw 2 OF 3 Richard Procfor l.\' VIE-1771K PATENTEDFiB 81972 SPSAO, E2?

swan 3 OF 3 Richard Proctor BY W MQ,

WEIGHT RESISTANT CHEST EXERCISING DEVICE While the exercise machine of the instant invention has been designed primarily for exercising and developing the pectoral muscles of the chest of women in order to firm the bust line, the exercise machine may also be utilized by men as a general chest exercise.

The exercise machine defines a padded table or bench surface upon which the person using the exercise machine may lie in a faceup position. The machine includes abutment members that are padded and mounted for swinging oscillatory movement about parallel horizontal axes extending generally longitudinally of the bench, spaced slightly above the upper surface of the bench and spaced approximately shoulder width apart. The pad members are spaced approximately inches outwardly of their axes of rotation and the pad members are engageable by the inner surfaces of the forearm and upper arm of a person lying upon the bench when the persons forearms are bent to form an acute angle with the upper arm and the upper arms are disposed at generally right angles to the centerline of the back. The padded abutment members are swingable upwardly and toward each other and are yieldingly biased toward their lowermost positions with the effective radius arms of the abutment members generally horizontally disposed and extending outwardly in opposite directions from the corresponding radii.

Pulley wheels are provided and are mounted for oscillatory movement with the padded abutment members. The pulley wheels are concentrically positioned relative to the axes of oscillation of the padded abutment members and weighted flexible tension member sections are trained about the pulley wheels and secured thereto for winding thereon. Also, means is provided whereby the pulley wheels may be adjustably angularly displaced about their axes of rotation independent of angular displacement of the corresponding padded abutment members and means is provided establishing limits of rotational movement of the pulley wheels in the directions in which they are biased by the weights associated with the tension members.

The main object of this invention is to provide an exercise machine which will be effective, when utilized in the prescribed manner, in developing the pectoral muscles underlying the bust area ofwomen.

Another object of this invention is to provide an exercise machine in accordance with the preceding objects including adjustment features whereby the portions of the machine contacted by women using the machine may be adjustably positioned to suit the size of any woman who may wish to use the machine.

A still further object of this invention is to provide an exercise machine including means whereby the resistance to movement of the movable portions of the machine may be varied and gradually increased as the pectoral muscles of persons using the machine become more developed.

A final object of this invention to be specifically enumerated herein is to provide an exercise machine in accordance with the preceding objects which will conform to conventional forms of manufacture, be of simple construction and easy to use so as to provide a device that will be economically feasible, long lasting and efficiently used by persons after having only a brief instruction on the operation of the machine.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIG. I is a perspective view ofthe exercise machine;

FIG. 2 is a fragmentary enlarged top plan view of the head end portion of the machine;

FIG. 3 is un clevational view of the machine as seen from the head cnd thereof;

FIG. 4 is a side elevational view of the exercise machine illustrating the head end thereof as seen from the left side of the machine;

FIG. 5 is a fragmentary vertical sectional view taken sub stantially upon the plane indicated by the section line 5-5 of FIG. 3;

FIG. 6 is an enlarged fragmentary horizontal sectional view taken substantially upon the plane indicated by the section line 66 of FIG. 3;

FIG. 7 is an enlarged fragmentary vertical sectional view taken substantially upon the plane indicated by the section line 7-7 ofFlG. 3;

FIG. 8 is a fragmentary sectional view taken substantially upon the plane indicated by the section line 8-8 of FIG. 7; and

FIG. 9 is a fragmentary exploded perspective view of the components illustrated in cross section in FIG. 8.

Referring now more specifically to the drawings, the numeral 10 generally designates the exercise machine of the instant invention. The machine 10 includes a support frame referred to in general by the reference numeral 12 provided with a padded bench 14. The bench 14 includes a foot end 16 and a head end 18.

Three transversely extending and foot defining bars 20, 22 and 24 are spaced longitudinally of the frame 12 and the bars 22 and 24 are interconnected by means of a plurality of iongitudinally extending and transversely spaced bars 26 and 28 secured therebetween. Further, a pair of short longitudinally extending bars 30 and 32 are secured between corresponding ends of the bars 20 and 22.

A pair of upstanding legs 34 and 36 have their lower ends secured to opposite end portions of the bar 24 outwardly of the bars 26 and 28 and the upper ends of the legs 34 and 36 are interconnected by a transverse bar 38 to which the foot end 16 of the padded bench 14 is secured in any convenient manner (not shown).

A pair of legs 40 and 42 have their lower ends secured to the opposite end portions of the bar 22 outwardly of the bars 26 and 28 and the upper ends of the legs 40 and 42 project upwardly above the head end 18 of the bench 14. A transverse bar 44 is secured between the legs 40 and 42 and underlies and has the head end 18 of the padded bench 14 secured thereto in any convenient manner (not shown). Further, an L- shaped bracket referred to in general by the reference numeral 46 is provided and includes a lower horizontal leg 48 which extends forwardly beneath the bar 44 and is secured to the latter in any convenient manner as well as an upstanding upper leg 50 which projects upwardly above the head end 18 of the padded bench 14 and has a padded headrest 52 secured thereto.

A pair of upright standards 54 and 56 have their lower ends secured to the opposite end portions of the bar 20 inwardly of the bars 30 and 32 and the upper ends of the standards are interconnected by a pair of horizontally registered, transversely extending and longitudinally spaced braces 58 and 60 whose corresponding ends are spaced apart by means of spacer sleeves 62 and 64.

The upper end portion of the leg 40 is secured to a corresponding portion of the standard 54 by means of a brace 66 extending and secured therebetween and a similar brace 68 is secured between the upper end portion of the leg 42 and the corresponding portion of the standard 56.

As can best be seen from FIG. 7, the upper end of the leg 40 is provided with a horizontal bore 70 which is horizontally aligned with a similar bore 71 formed in the standard 54. A pivot shaft 72 having diametrically reduced end portions 74 and 76 has those end portions journalcd in the bores 70 and 71. The end portion 76 extends through the bore 71 and includes a diametrically opposite flattened portion 78 intermediate its opposite ends and a blind bore 80 in its free end. Further, a thrust collar 82 is secured in position on the pivot shaft 72 by means of a setscrew 84 with the collar 82 opposing the surface of the standard 54 facing the post 40.

- outwardly of the flattened portion 78 and retained thereon by means of a diametrically enlarged washer 88 secured on the end of the end portion 76 by means of a suitable fastener 90. Further, one end of a crank arm 92 is secured to the free end of the end portion 74 by means of a fastener 94 secured through the crank arm 92 and threadedly engaged in a blind bore 96 formed in the end portion 74.

A short crank arm 98 is providedand includes a bifurcated end 100 clamped about the flattened portion 78 by means of a clamp-screw 102 secured between the furcations 104 of the crank arm 98. Accordingly, the inner end of the crank arm 98 is secured to the pivot shaft 72 for rotation therewith and it may be observed from FIG. 8 of the drawings that the outer end of the crank arm 98 is provided with a transverse bore 106 with which a setscrew 108 is operatively associated.

The above-referred-to components numbered evenly from 70 through 108 and also the bore 71 is duplicated in connection with the leg 42 and the standard 56. The pulleys 86 each includes arcuate slots 110 formed therethrough having the axial centers of the pivot shafts 72 as their centers of curvature and corresponding ends of a pair of shafts 112 are secured in the bores 106 by the setscrews 108 and extend through the slots 110 and have clamp screws 113 provided with handles [14 threaded on their end portions projecting through the pulley wheels 86. In this manner, the pulley wheels 86 may be releasably secured in adjusted angularly displaced positions relative to the pivot shafts 72.

The pulley wheels also have abutment screws 116 secured there'through including end portions 118 disposed for engagement with the standards 54 and 56 and accordingly, oscillation of the pulley wheels 86 is limited in one direction of rotation thereof.

The free ends of the crank arms 92 have longitudinally spaced bores 120 formed therein and corresponding ends ofa pair of arms 122 are secured to the crank arms 92 by means of fasteners 124 secured through one set of corresponding bores 120. Of course, inasmuch as two bores 120 are provided and spaced longitudinally of each crank arm 92, the arms 122 may be secured to the crank arms 92 in two positions spaced longitudinally thereof.

The ends of the arms 122 remote from the arms 92 are provided with elongated padded abutment members 126 which generally parallel the padded bench 14 and the ends of the shafts 112 remote from the corresponding clamp screws 113 extend from the crank arms 98 through the crank arms 92 and define a pair of short angulated handgrips 128 at their free ends. The handgrips 128 are spaced adjacent but outwardly from the end portions 74 and are slightly angulated relative to the latter.

A second pair of smaller pulley wheels 130 are journaled between the braces 58 and 60 and have circumferential grooves 132 formed therein. Further, a short elongated longitudinally extending elevated horizontal support 134 is supported from either one or both of the braces 58 and 60 and has a pair of upstanding threaded bores 136 formed through its opposite ends. In addition, a center lower longitudinally extending horizontal brace 138 extends between and is secured to the center portions of the foot defining braces and 22 by means of fasteners 140 and 142. The support or brace 138 projects forwardly from the foot defining brace 20 and has the lower ends of a pair of guide rods 144 and 146 secured thereto by means of suitable fasteners 148 and 150, see FIG. 5. The upper ends of the guide rods 144 and 146 are threaded and threadedly engaged in the bores 136 formed in the opposite ends of the horizontal support 134. The guide rods 144 and 146 are parallel and have a plurality of vertically stacked weight plates 152 slidably mounted thereon. The weight plates 152 have registered center bores 154 formed therein and a top plate 156 is also slidably disposed on the guide rods 144 and 146 and includes a depending lift rod 158 having a plurality of vertically spaced horizontal bores 160 formed therethrough. The weight plates 152 have corresponding horizontal bores 162 fonned therein and the bores 162 are registered with the bores 160. A lockpin 164 is provided and may be inserted in any one of the bores 162 with its inner end projecting into the corresponding bore 160 whereby the weight plate 152 having the pin 164 therein and all of the weight plates 152 disposed thereabove will be lifted with the top plate 156 when the top plate 156 is slid upwardly along the guide rods 144 and 146.

The top plate 156 has a pair of upstanding mounting lugs or flanges 166 secured thereto and a small pulley wheel 168 is journaled between the lugs 166. 1

An elongated flexible tension member 170 is provided and its midportion is trained about the lower peripheral portion of the pulley 168. The opposite ends of the tension member 170 extend upwardly and over the pulleys 130 and are seated in the grooves 132 formed in the pulleys 130. The free ends of the tension member 170 then pass downwardly and are trained about the opposing peripheral portions of the pulley wheels 86 and secured in radial bores 172 formed in the pulley wheels 86 by means of setscrews 174.

Accordingly, it may be seen that the weights supported from the lift rod 158 by means of the pin 164 pull downwardly upon the midportion of the tension member 170 whereby the free ends of the tension member 170 are pulled upwardly so as to urge the pulley wheels 86 on the rightand left-hand sides of the machine 10 as seen in FIG. 3 of the drawings in clockwise and counterclockwise directions, respectively.

In order to use the machine 10, the arms 122 may first be positioned longitudinally of the crank arms 92 as desired in order to enable a person ofa given size to use the machine 10. Then, the pulley wheels 86 may be angularlyadjusted relative to the crank arms 92 in order to vary the angular positions of the crank arms 92 when they are in their rest positions as the stop pins 116 engage the standards 54 and 56. Then, the pin 164 may be inserted in the desired bore 162 and the corresponding bore 160 so as to cause a predetermined number of the weight plates 152 to be elevated as the person using the machine and having the lower portions of his upper arms engaged with the pads 126 causes the free ends of the arms or crank arms 92 to be swung upwardly toward each other. When utilizing the machine 10 a person whose pectoral muscles have not been exercised will first start out by lifting only a small number of the plates 152 and will begin with only ten repetitions of exercises. After a person has begun to develop the pectoral muscles she may subsequently work up to three sets of 10 repetitions a day. Also, the number of weight plates 152 may be gradually increased although it is possible that persons of slight build may wish to ultimately lift a fewer number of weight plates 152 than a personhaving a larger frame.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.

What is claimed as new is as follows:

1. An exercise machine including means defining an elongated plane along which a person may place his back, a pair of abutment members supported for oscillatory swinging movement between first and second positions displaced generally 90 apart about generally parallel axes extending longitudinally of said plane and spaced generally shoulder width apart and slightly outwardly of one side of said plane, said abutment members, when in said first positions being disposed on remote sides of said axes and outwardly of said one side of said plane and being swingable away from said plane and 2. The combination of claim 1 wherein said means defining said elongated plane comprises an elongated generally planar abutment surface.

3. The combination of claim 1 wherein said abutment surface is generally horizontally disposed and adapted to have a person lay thereon on his back.

4. The combination of claim 3 wherein said machine includes a headrest at one end of said surface projecting upwardly above the latter.

5. In combination, a first pair of spaced side-by-side upper pulleys journaled for rotation about generally parallel horizontal axes, a third weighted pulley disposed between and lower than said first pulleys, an elongated flexible tension member having its midportion trained beneath said third pulley and its opposite end portions trained over said first pulleys, a second pair of pulleys journaled for rotation about horizontal axes generally paralleling and spaced below the first mentioned axes, said tension members having free ends, the free end portions of said tension members extending downwardly from said first pair of pulleys and being trained beneath and secured to said second pair of pulleys, and a pair of crank arms extending generally radially of the axes of rotation of the second pair of pulleys and oscillatable with the latter, the outer ends of said crank arms including abutment portions adapted to be engaged and urged in arcuate paths having the second mentioned axes as their centers of curvature and in directions causing said weighted pulley to be elevated relative to the first-mentioned pair of pulleys, means operative to establish limits of rotation of the second pair of pulleys in the opposite directions, means operatively connecting said crank arms and the second-mentioned pair of pulleys operative to angularly adjust said, crank arms relative to said second-mentioned pair of pulleys.

6. The combination of claim 5 wherein said abutment portions include force arms projecting from the free ends of said crank arms, and generally paralleling the second-mentioned axes.

7. The combination of claim 6 wherein said force arms and crank arms include means operative to selectively mount said force arms in positions spaced longitudinally of the free end portions of said crank arms.

8. The combination of claim 5 including a generally horizontal planar backrest defining surface spaced slightly below the axes of rotation of the second mentioned pair of pulleys.

9. The combination of claim 8 wherein said crank arms are swingable between first generally horizontal positions projecting outwardly in opposite directions from the second mentioned axes and second positions with the free ends of said crank arms swung upwardly and toward each other.

10. in combination, a first pair of spaced side-by-side upper pulleys journaled for rotation about generally parallel horizontal axes, a third weighted pulley disposed between and lower than said first pulleys, an elongated flexible tension member having its midportion trained beneath said third pulley and its opposite end portions trained over said first pulleys, a second pair of pulleys journaled for rotation about horizontal axes generally paralleling and spaced below the first mentioned axes, the free end portions of said tension members extending downwardly from said first pair of pulleys and being trained beneath and secured to said second pair of pulleys, and a pair of crank arms extending generally radially of the axes of rotation of the second pair of pulleys and oscillatable with the latter, the outer ends of said crank arms including abutment portions adapted to be engaged and urged in arcuate paths having the second-mentioned axes as their centers of curvature and in directions causing said weighted pulley to be elevated relative to the first mentioned pair of pulleys, a generally horizontal planar backrest defining surface spaced slightly below the axes of rotation of the second-mentioned pair of pulleys, said crank arms being swingable between first generally horizontal positions projecting outwardly in opposite directions from the second-mentioned axes and second positions with the free ends of said crank arms swung upwardly and toward each other, said crank arms including angulated handgrips projecting laterally outwardly therefrom intermediate said abutment portions and said axes of rotation of the second pair ofpulleys.

11. Art exercising machine comprising a support, pulley shaft and body engaging means adjustably fixed rotatably on said pulley shaft for oscillatory swinging movement relative to said support, a pulley wheel fixed to said shaft during an exercise program for rotation about an axis generally coinciding with the axis of oscillation of said body engaging means, anchor means carried by said body engaging means, and means for rigidly connecting said anchor means to an offcenter location on the pulley wheel, the connecting means including means for detachably connecting said anchor means to said pulley wheel and for adjustably varying the angular position of said body engaging means about said pulley wheels shaft.

12. The combination of claim 11 wherein said machine includes a second pulley shaft and a second body engaging member adjustably fixed rotatably on said second pulley shaft for oscillation about an axis spaced from and paralleling the axis ofoscillation of the first-mentioned body engaging means, a second pulley wheel fixed to said second shaft for rotation about an axis coinciding with the axis of oscillation of the second body engaging means, second anchor means carried by said second body engaging means, and second connecting means for rigidly connecting said second anchor means to an offcenter location on said second pulley wheel, said second connecting means including means for detachably connecting said second anchor means to said second pulley wheel and for adjustably varying the angular position of said second body engaging means about said second pulley wheel shaft.

13. The combination of claim 12 wherein said means for detachably connecting said anchor means to an offcenter location on the pulley wheel includes an arcuate slot formed in said pulley wheel having its center of curvature coinciding with the axis of rotation of said pulley wheel, said anchor means comprising a portion projecting outwardly from said body engaging means along a path generally paralleling the axis of oscillation of said body engaging means and slidable in and secured through said slot. 

1. An exercise machine including means defining an elongated plane along which a person may place his back, a pair of abutment members supported for oscillatory swinging movement between first and second positions displaced generally 90* apart about generally parallel axes extending longitudinally of said plane and spaced generally shoulder width apart and slightly outwardly of one side of said plane, said abutment members, when in said first positions being disposed on remote sides of said axes and outwardly of said one side of said plane and being swingable away from said plane and toward each other during movement toward said second positions, a freely rotatable pulley wheel, shaft means parallel to the axis of rotation of the abutment members extending between and connected to each abutment member and to an off center location on the pulley wheel, and means yieldingly biasing said abutment members toward said first positions.
 2. The combination of claim 1 wherein said means defining said elongated plane comprises an elongated generally planar abutment surface.
 3. The combination of claim 1 wherein said abutment surface is generally horizontally disposed and adapted to have a person lay thereon on his back.
 4. The combination of claim 3 wherein said machine includes a headrest at one end of said surface projecting upwardly above the latter.
 5. In combination, a first pair of spaced side-by-side upper pulleys journaled for rotation about generally parallel horizontal axes, a third weighted pulley disposed between and lower than said first pulleys, an elongated flexible tension member having its midportion trained beneath said third pulley and its opposite end portions trained over said first pulleys, a second pair of pulleys journaled for rotation about horizontal axes generally paralleling and spaced below the first mentioned axes, said tension members having free ends, the free end portions of said tension members extending downwardly from said first pair of pulleys and being trained beneath and secured to said second pair of pulleys, and a pair of crank arms extending generally radially of the axes of rotation of the second pair of pulleys and oscillatable with the latter, the outer ends of said crank arms including abutment portions adapted to be engaged and urged in arcuate paths having the second mentioned axes as their centers of curvature and in directions causing said weighted pulley to be elevated relative to the first-mentioned pair of pulleys, means operative to establish limits of rotation of the second pair of pulleys in the opposite directions, means operatively connecting said crank arms and the second-mentioned pair of pulleys operative to angularly adjust said crank arms relatiVe to said second-mentioned pair of pulleys.
 6. The combination of claim 5 wherein said abutment portions include force arms projecting from the free ends of said crank arms, and generally paralleling the second-mentioned axes.
 7. The combination of claim 6 wherein said force arms and crank arms include means operative to selectively mount said force arms in positions spaced longitudinally of the free end portions of said crank arms.
 8. The combination of claim 5 including a generally horizontal planar backrest defining surface spaced slightly below the axes of rotation of the second mentioned pair of pulleys.
 9. The combination of claim 8 wherein said crank arms are swingable between first generally horizontal positions projecting outwardly in opposite directions from the second mentioned axes and second positions with the free ends of said crank arms swung upwardly and toward each other.
 10. In combination, a first pair of spaced side-by-side upper pulleys journaled for rotation about generally parallel horizontal axes, a third weighted pulley disposed between and lower than said first pulleys, an elongated flexible tension member having its midportion trained beneath said third pulley and its opposite end portions trained over said first pulleys, a second pair of pulleys journaled for rotation about horizontal axes generally paralleling and spaced below the first mentioned axes, the free end portions of said tension members extending downwardly from said first pair of pulleys and being trained beneath and secured to said second pair of pulleys, and a pair of crank arms extending generally radially of the axes of rotation of the second pair of pulleys and oscillatable with the latter, the outer ends of said crank arms including abutment portions adapted to be engaged and urged in arcuate paths having the second-mentioned axes as their centers of curvature and in directions causing said weighted pulley to be elevated relative to the first mentioned pair of pulleys, a generally horizontal planar backrest defining surface spaced slightly below the axes of rotation of the second-mentioned pair of pulleys, said crank arms being swingable between first generally horizontal positions projecting outwardly in opposite directions from the second-mentioned axes and second positions with the free ends of said crank arms swung upwardly and toward each other, said crank arms including angulated handgrips projecting laterally outwardly therefrom intermediate said abutment portions and said axes of rotation of the second pair of pulleys.
 11. An exercising machine comprising a support, pulley shaft and body engaging means adjustably fixed rotatably on said pulley shaft and for oscillatory swinging movement relative to said support, a pulley wheel fixed to said shaft during an exercise program for rotation about an axis generally coinciding with the axis of oscillation of said body engaging means, anchor means carried by said body engaging means, and means for rigidly connecting said anchor means to an offcenter location on the pulley wheel, the connecting means including means for detachably connecting said anchor means to said pulley wheel and for adjustably varying the angular position of said body engaging means about said pulley wheel shaft.
 12. The combination of claim 11 wherein said machine includes a second pulley shaft and a second body engaging member adjustably fixed rotatably on said second pulley shaft for oscillation about an axis spaced from and paralleling the axis of oscillation of the first-mentioned body engaging means, a second pulley wheel fixed to said second shaft for rotation about an axis coinciding with the axis of oscillation of the second body engaging means, second anchor means carried by said second body engaging means, and second connecting means for rigidly connecting said second anchor means to an offcenter location on said second pulley wheel, said second connecting means including means for detachably connecting said second anchor meaNs to said second pulley wheel and for adjustably varying the angular position of said second body engaging means about said second pulley wheel shaft.
 13. The combination of claim 12 wherein said means for detachably connecting said anchor means to an offcenter location on the pulley wheel includes an arcuate slot formed in said pulley wheel having its center of curvature coinciding with the axis of rotation of said pulley wheel, said anchor means comprising a portion projecting outwardly from said body engaging means along a path generally paralleling the axis of oscillation of said body engaging means and slidable in and secured through said slot. 